<?php

/**
 * UserIdentity represents the data needed to identity a user.
 * It contains the authentication method that checks if the provided
 * data can identity the user.
 */
class UserIdentity extends CUserIdentity
{
	/**
	 * Authenticates a user.
	 * The example implementation makes sure if the username and password
	 * are both 'demo'.
	 * In practical applications, this should be changed to authenticate
	 * against some persistent user identity storage (e.g. database).
	 * @return boolean whether authentication succeeds.
	 */
	 
	private $id; 
	public function authenticate()
	{
		/*$users=array(
			// username => password
			'demo'=>'demo',
			'admin'=>'admin',
		);
		
	   if(!isset($users[$this->username]))
			$this->errorCode=self::ERROR_USERNAME_INVALID;
		else if($users[$this->username]!==$this->password)
			$this->errorCode=self::ERROR_PASSWORD_INVALID;
		else
			$this->errorCode=self::ERROR_NONE;
	    */
		
		$record = Users::model()->findByAttributes(array('email'=>$this->username));
		if($record==null){
		   $this->errorCode=self::ERROR_USERNAME_INVALID;
		}else if($record->password!==md5($this->password)){
			$this->errorCode=self::ERROR_PASSWORD_INVALID;
		}else{
		    $this->id=$record->user_id;
			$this->errorCode=self::ERROR_NONE;
		}
		return !$this->errorCode;
	}
	
	public function getId(){
	
	   return $this->id;
	}
}